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中文摘要：
利用高温固相法合成了KNaCa2（PO4）2：Sm3＋ 系列橙红色荧光粉，并对其发光性能进行了研究。样品的激发光谱在402nm有很强的发射带，与近紫外LED芯片匹配。在402nm近紫外光激发下，KNaCa2（PO4）2：Sin3＋ 的发射光谱由3个峰组成，发射峰值位于569、601和648nm处，分别归属于Sm3＋的 4G_5/2→6H_J/2（J=5，7，9）跃迁。随着Sm3＋掺量的增加，样品发光强度先增强后减弱，当Sm3＋掺量为0．02mol时发光强度达到最大，浓度猝灭机理为电偶极-电偶极相互作用。分析了不同Sm3＋掺杂浓度样品的荧光衰减时间，并研究了电荷补偿剂Li＋ 对样品发光强度的影响。样品KNaCa1.96（PO4）2：0．02Sm3＋，0．02Li＋发射光谱（402nm激发）的积分强度是商用红色荧光粉Y2O3：Eu3＋ 发射光谱（253m激发）的1．5倍。
英文摘要：
A series of orange reddish emitting phosphors of KNaCa2（POa）2：Sm3＋ were synthesized via conventional solid-state reac- tion, and its photoluminescence properties were investigated. The excitation spectra of KNaCa2（PO4）2：Sm3＋ phosphors reveal inten- sive excitation bands at 402 nm, which match with near-UV LED chips. The emission spectra of the phosphors exhibit three peaks composed of emission peak at 569, 601 and 648 nm, respectively, due to the 4G_5/2→6H_J/2 （J= 5, 7, 9） transitions of Sm3＋. The lumi- nescence intensity firstly increases and then decreases with increasing Sm3＋-doped amount. The emission reaches the maximum in- tensity at Sm3＋-doped amount of 0.02 mol, and the concentration quenching mechanism is the electric dipole--electric dipole interac- tion. The decay lifetime of the phosphors doped with different Sm3＋ amounts was analyzed. The effect of the compensators Li＋ on the emission intensity of the phosphor was also investigated. The integral intensity of the emission spectra of KNaCal.96（PO4）2： 0.02SmS＋,0.02 Li＋ phosphors excited at 402 nm is 1.5 times greater than that of Y203：Eu3＋ commercial red phosphor excited at 253 nm.
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